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 ###Instrução: Qual é a média de estrelas quando o chassi é focus rs wrc 08 e termina com mais de 27?
 ###Tabelas: CREATE TABLE constructors (constructors_id AUTO_INCREMENT PRIMARY KEY, Constructor VARCHAR, Chassis VARCHAR, Starts INT, Finishes INT, Wins INT, Podiums INT, Stage wins INT, Points INT) CREATE TABLE performances_by_nations (performances_by_nations_id AUTO_INCREMENT PRIMARY KEY, # INT, Nation VARCHAR, Winners INT, Runners-up INT, 3rd Place INT, 4th Place INT) CREATE TABLE chessmetrics (chessmetrics_id AUTO_INCREMENT PRIMARY KEY, Rank INT, 1-year peak VARCHAR, 5-year peak VARCHAR, 10-year peak VARCHAR, 15-year peak VARCHAR, 20-year peak VARCHAR) CREATE TABLE examples_of_different_pronunciation (examples_of_different_pronunciation_id AUTO_INCREMENT PRIMARY KEY, Original VARCHAR, IPA ( Lisbon ) VARCHAR, IPA ( Rio de Janeiro ) VARCHAR, IPA ( São Paulo ) VARCHAR, IPA ( Santiago de Compostela ) VARCHAR, Translation VARCHAR) CREATE TABLE group_b_relegation (group_b_relegation_id AUTO_INCREMENT PRIMARY KEY, Position INT, Club VARCHAR, Played INT, Points VARCHAR, Wins INT, Draws INT, Losses INT, Goals for INT, Goals against INT, Goal Difference INT)  
SELECT AVG Starts FROM constructors WHERE Chassis = focus rs wrc 08 AND Finishes > 27